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- If co-efficient of variation = 45% and mean = 24. Find the standard De...
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- Two variables x and y are related by y = 2-3x If the S.D of x be 1.5 t...
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- The variance of first n natural numbers is 44. Find the value of n.
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- Find the range for the following frequency distribution :
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- The standard Deviation of 30 observation of a sample is 4.5 If each ob...
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- If the SD of the first numbers even integers be sqrt40, then find numb...
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- Find the mean and variance of the data : 5, 9, 8, 12, 6, 10, 6, 8
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- Find the SD of first 10 multiples of 3.
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- Calculate the mean deviation about median from the data : 340, 150, 21...
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- The variance of 20 observations is 5. If each observation be multipli...
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- The mean and standard deviation of observations are 8 and 14 respectiv...
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- Calculate the mean and standard deviation of the numbers-natural numbe...
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- The scores of batsman in 10 matches were as follows : 38, 70, 48, 34, ...
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- Prove that if x1and x2 two values of a variable x, so its standard dev...
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- Find the mean deviation about the mean of the data : 7, 8, 4, 13, 9, 5...
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- Find the mean deviation about the mean of the data : 7, 8, 4, 13, 9, 5...
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- Find the SD of first 10 multiples of 3.
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- The mean and variance of seven observations are 8 and 16 respectively....
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- The mean and variance of seven observations are 8 and 16 respectively....
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- The mean and standard deviation of 100 observations were calculated as...
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